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A new species of fungus beetle that evolved to have no eyes or wings has been found in a cave in Arizona. The insect, the Ptomaphagus parashant, at one time had eyes and wings, but living in the tight, dark confines of the cave, they didn't need those feature, according to a study set to be published in Coleopterists Bulletin. "With these types of animals, they're really shedding those features ... over evolutionary time. This animal likely entered caves about 200,000 years ago," said Northern Arizona University ecologist Jut Wynne, who co-authored the study.

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A 16-year-old volunteer found an ancient tooth in a French cave known for its prehistoric artifacts. "A large adult tooth -- we can't say if it was from a male or female -- was found during excavations of soil we know to be between 550,000 and 580,000 years old, because we used different dating methods," said Amelie Viallet, a paleoanthropologist. Hundreds of young would-be archaeologists work in the Arago cave, which has been a key prehistoric dig site for around 50 years.

Two new species of eyeless pseudoscorpions have been found in a Grand Canyon cave, according to a description in the Journal of Arachnology. The creatures don't have the poisonous tail exhibited by true scorpions, but have venomous stingers in their pincers to trap prey, researchers say. The new species are called Hesperochernes bradybaughii and Tuberochernes cohni, and they prey on such small invertebrates as springtails, book lice and mites.

A new species of snail with a semi-transparent shell has been found deep inside a cave in western Croatia. Zospeum tholussum has no eyes or shell pigmentation, which are unnecessary in the complete darkness of the cave. A live specimen and eight empty shells were collected by a team of cavers and biologists from the Croatian Biospeleological Society, which was on an expedition to measure the depth of the cave.

The remains of 66 people from 3,000 years ago were found in a cave in Sumatra, Indonesia. It's the first time so many remains have been uncovered in a single cave. Researchers believe it was a burial site that Indonesia's first farmers used. Dog and pig remains were also found in the area known as Harimaru, or Tiger Cave. "There are still occupation traces deeper and deeper in the cave, where we have not excavated yet. So it means the cave is very promising," said Truman Simanjuntak of Jakarta's National Research and Development Center for Archaeology.

Fossils found in China might belong to a previously unknown kind of human. The fossils, which are 11,500 to 14,500 years old, indicate the so-called "Red Deer Cave People" had thick skull bones, jutting jaws and large molars. It's not clear whether the cave people were modern humans or a separate species.